CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Revenue	$ 2,765.0	$ 2,477.8	$ 2,846.4
Costs of revenue	1,865.5	1,695.6	1,936.3
Gross profit	899.5	782.2	910.1
General and administrative expenses	214.3	198.7	241.3
Sales and marketing expenses	150.8	146.5	165.9
Research and development expenses	94.9	84.9	97.9
Asbestos-related (benefit) costs, net	(74.4)	66.3	(20.2)
Restructuring costs	9.6	43.0	12.8
Asset impairment charges	0.0	16.3	1.0
Operating income	504.3	226.5	411.4
Interest (income), net	(1.1)	(0.7)	(4.1)
Non-operating postretirement (benefit) costs, net	(1.3)	144.2	4.5
Miscellaneous (income), net	(2.4)	(2.2)	(3.4)
Income from continuing operations before income tax	509.1	85.2	414.4
Income tax expense	189.6	15.3	89.9
Income from continuing operations	319.5	69.9	324.5
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	1.5	4.0	1.7
Net income	321.0	73.9	326.2
Less: Income attributable to noncontrolling interests	4.7	1.4	1.1
Net income attributable to ITT Inc.	316.3	72.5	325.1
Amounts attributable to ITT Inc.:
Income from continuing operations, net of tax	314.8	68.5	323.4
Net income attributable to ITT Inc.	$ 316.3	$ 72.5	$ 325.1
Basic:
Continuing operations	$ 3.66	$ 0.79	$ 3.69
Discontinued operations	0.02	0.05	0.02
Net income	3.68	0.84	3.71
Diluted:
Continuing operations	3.64	0.78	3.65
Discontinued operations	0.02	0.05	0.02
Net income	$ 3.66	$ 0.83	$ 3.67
Weighted average common shares – basic	86.0	86.7	87.7
Weighted average common shares – diluted	86.5	87.3	88.6